Edmund warren



' E. WARREN.

Thrashing Machine Cylinder.

Patented. May-23,- 1848.

Fig.

A Fay- UNITED STATES PATENT OFFICE.

EDMUND WARREN, OF NEW YORK, N. Y.

THRESI-IINGr-MACHINE.

Specification of Letters Patent No. 5,588, dated May 23, 1848. v

To all whom it may concern:

Be it known that I, EDMUND IVARR N, of the city, county, and State ofNew York, have invented a new and useful Improvement inThreshing-Machine Cylinders; and I hereby declare that the following isa full and exact description.

To enable others to make and use my invention I proceed to describe itsconstruction and operation reference being had to the drawings hereuntoannexed and making part of this specification.

Figure 1 is a perspective view of a cylinder, formed by putting twoheads upon a shaft and covering with thick plank staves nailed on-thewhole being then turned in a lathe so as to leave a small ridge L ateach end five eighths of an inch higher than the rest of the cylinder.Three bars, A, are then placed on the cylinder longitudinally within andflush with the ridges, L. This cylinder is then prepared to receive thecovering. Fig. 2, a cylinder (in perspective) complete, with hoops onthe ends. These hoops set tight upon the wooden cylinder as seen in Fig.1 and overlap the springs or metallic plates, 0, about three eighths ofan inch to confine them on. ,Fig. 3, end View of the wooden cylinderFig. 1. Fig. 4, end view of the cylinder complete as in Fig. 2. Fig. .5,cross section of the wooden cylinder showing how much is turned off fromthe middle part of the cylinder to leave the ridges, L. Fig. 6, end ofone of the pieces,

C, which form the covering of the cylinder.

Fig. 7, perspective of the same. Fig. 8, another view of the same. Fig.9, plan of the same.

The wooden cylinder Fig. 1 being prepared, three pieces of plate steel,0, are laid upon it, the sides of the pieces being upon the bars, A, towhich they are secured by screws two or more on each side in slots cutfor the purpose. The pieces, 0, are short enough to set within theridges, L, so that they set upon the bars only and admit of beingpressed or sprung toward the center. These pieces, C,have setlongitudinally upon them the heaters, which are simple strips of metal.These boaters extend over the ends of the pieces, 0, so that the beaterswill be as long as the cylinder. A hoop of iron one inch or more inwidth is put on each end of the wooden cylinder Fig. 1, firm andoverlaps the piece, C, three eights of an inch thus each end of theplate is secured by the hoop from flying 0H but it has free play tospring in toward the center of the cylinderthe sides only being held outin place by resting on the bars, A.

The pieces, C, have screws through them (see diagram Fig. 9) to aid insteadying them. The holes through them are large so that the pieces willspring freely up and down.

Nhat I claim as my invention and desire to secure by Letters Patent isThe application to a threshing cylinder of the metallic spring plates,0, in the manner and for the purpose above described.

In Witness whereof I have hereunto set my hand at the city of New Yorkthis ninth day-of May 1848.

EDMUND l/VARREN.

